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4 years ago

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pls help me with this :/. this is due in like 5 mins!!! (i’ll mark brainiest if u don’t leave a link just pls help me!)

2 answers:

damaskus [11]4 years ago

7 0

Find food that’s far away! sharks are very good at that

DIA [1.3K]4 years ago

5 0

Answering so other person can get brainliest

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Solve the system using substitution. <br><br> 2x + 2y = 30<br> y - 4x = 0<br><br> ( _ , _ )

Kay [80]

Answer:

x = 3

y= 12

Step-by-step explanation:

2x + 2y = 30

y - 4x = 0 /*2

2x + 2y = 30

2y - 8x = 0

-----------------

10x = 30

x = 3

y= 12

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3 years ago

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Please help on this math question

Llana [10]

Answer:

$\large\boxed{C.\ \dfrac{-2x^2-x+72}{8x^2}}$

Step-by-step explanation:

$\dfrac{9}{x^2}-\dfrac{2x+1}{8x}=\dfrac{9\cdot8}{x^2\cdot8}-\dfrac{(2x+1)\cdot x}{8x\cdot x}\qquad\text{use the distributive property}\\\\=\dfrac{72}{8x^2}-\dfrac{2x^2+x}{8x^2}=\dfrac{72-(2x^2+x)}{8x^2}=\dfrac{72-2x^2-x}{8x^2}\\\\=\dfrac{-2x^2-x+72}{8x^2}$

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3 years ago

A triangle that is considered equilateral has ?

Shtirlitz [24]

☻ ~~~~~~~~~~~~ Hello! ~~~~~~~~~~~~~~~ ☻

➴ A triangle that is considered equilateral has 3 equal sides.

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ ♡

3 0

4 years ago

Read 2 more answers

Graph a parabola whose x-intercepts are at x = -3 and x = 5 and whose minimum value is y = -4.

shtirl [24]

Answer:

(See explanation and attachment below for further details)

Step-by-step explanation:

The parabola must satisfy the following conditions:

$y + 4 = C\cdot (x - k)^{2}$

$y + 4 = C\cdot (x^{2}-2\cdot k \cdot x + k^{2})$

The expression for the x-intercepts are, respectively:

x = -3

$4 = C\cdot [(-3)^{2} - 2\cdot k\cdot (-3)+k^{2}]$

$\frac{4}{C} = 9 + 6\cdot k + k^{2}$

x = 5

$4 = C\cdot [5^{2}-2\cdot k \cdot (5)+k^{2}]$

$\frac{4}{C} = 25 - 10\cdot k + k^{2}$

By equalizing both expressions:

$9 + 6\cdot k + k^{2} = 25 - 10\cdot k + k^{2}$

$16\cdot k = 16$

$k = 1$

And,

$C = \frac{4}{25-10\cdot (1)+1^{2}}$

$C = \frac{1}{4}$

The equation of parabola is:

$y = \frac{1}{4}\cdot (x-1)^{2} - 4$

Whose graph is included as attachment.

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3 years ago

A store put a sweater on sale for half of the original price. the sweaters still did not sell, so the store reduced the price by

snow_lady [41]

The original cost was $35

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3 years ago